| 摘要 |
The invention includes a composition comprising from at least 40 to 98 weight percent of at least one GPPS, from 0 to 98 weight percent of at least one HIPS, from at least 0.5 to 10 weight percent at least one styrene block copolymer, from at least 0.5 to 10 weight percent of at least one polypropylene wherein the combination of GPPS, HIPS, polypropylene and styrene block copolymer make up at least about 90 percent of the composition as well as a film made of the composition, an envelope window patch comprising the film, an envelope comprising the window patch, and a process for making the film.
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